278 Reprorr or trHE DeErARTMENT OF ENTOMOLOGY OF THE 
There is evidence of injury to the peach buds with the strong 
gas. Evidently the gas at a strength of .22 gram of cyanide with 
an exposure of one hour did no harm, as the percentage of treated 
buds set is greater than the percentage of checks that set, But 
there is a decided falling off in the percentage when the gas was 
used at .3 grams of cyanide indicating that the gas at this strength 
injured the buds. Comparing the whole number of buds treated 
with the checks, however, there is but little difference between the 
peaches, pears and cherries. The whole number of peach buds 
treated was 732, of which 70 2 per ct. set. The whole number of 
checks was 728, of which 82.8 per ct. set. 
he growth of the treated peach buds was in nearly all cases 
e jnal to the checks. 
